Excellent ATO SystemBy 40g Longon 7/22/2015

40g Long would recommend this product to a friend

After we finally got our tank set-up, I was amazed at the amount of evaporation from day to day. Being new to the hobby, I was concerned with maintaining stable water parameters. . I watched all the videos, researched the high tech models to the DIY versions, and decided the Tunze would be the ATO for our system. Since it's installation it has been performed flawless. I highly recommend this product.

great productBy rrosenbon 7/22/2015

rrosenb would recommend this product to a friend

So easy to install and works perfectly. I wish all aquarium products could be more like this

Excellent ATOBy Connyon 7/22/2015

Conny would recommend this product to a friend

Well built, easy setup, reliable- excellent ATO

Works greatBy Daveon 7/17/2015

Dave would recommend this product to a friend

This thing works great!! A little pricy compared to other top off brands but very dependable and unlikely to fail. I would recommend this product over all the other ones on the market. Easy to install too!
Dave
Birmingham

Solid and reliableBy Steveon 7/16/2015

Steve would recommend this product to a friend

The Tunze 3155 Auto Top Off system is the best there is. This is my second 3155 system, just installed on my new 185 gal tank build. My first 3155 system (on my first,180 gal, tank build) continues to function perfectly, with no issues, after more than 3 years of service.

Nice simple and reliableBy JEMM55on 7/14/2015

JEMM55 would recommend this product to a friend

Better than the rest...the electric eye beats the mechanicals hands down

Loving my Tunze ATO 3155By A.J.on 7/13/2015

A.J. would recommend this product to a friend

After a fair amount of research and reading many customer reviews I pulled the trigger and bought the 3155. Works perfect and only took a few min to set up. It really take the stress out of traveling, not having to worry about your water level. ALSO - has kept my salinity rock solid for over 3 months now, which my corals are loving!!

great customer serviceBy dozer42on 6/20/2015

dozer42 would recommend this product to a friend

My ato quit working. Contacted tunze and they had me send it in. Long story short my pump went bad and burned out the controller unit. I had to buy a new pump but even though my controller unit was out of warranty they replaced it for free.

Must HaveBy RICHARDon 6/16/2015

RICHARD would recommend this product to a friend

This works great and the two different sensors are awesome. I even plumbed this to feed my two foot tall DIY kalk reactor and it feeds the reactor with no issues.

Get it. By Michaelon 6/12/2015

Michael would recommend this product to a friend

This is my first and probably the will be the last ATO system I will need to buy...unless I set up another reef tank of course. Forget about the "hefty" price tag, your tank is certainly worth it.

Excellent product!By Josephon 6/1/2015

Joseph would recommend this product to a friend

I have this setup currently for my system. While the instructions are not as straightforward as I'd like, there are plenty of videos online to learn how to set everything up. There are several ways to use this product which are part of what makes it good but also part of why the instructions are a little confusing. Nevertheless, it works great and worth the money IMO. Get it.

EXCELLENT PRODUCTBy MARIOon 6/1/2015

MARIO would recommend this product to a friend

IT IS A PEACE OF MIND, NOT HAVING TO WORRYING IN ADDING WATER AND SALT EVERY TIME IT GETS LOW.

FantasticBy Plomantoon 5/28/2015

Plomanto wouldn't recommend this product to a friend

This thing is awesome . Very easy to install and works exactly as described. I highly recommend this product for any one looking for an ATO

over 5 years and it is the best!By mathdocon 5/22/2015

mathdoc would recommend this product to a friend

I have had one of these as my overflow system along with a 20 gallon food grade trash can filled with water plus some Kalk for over 5 years. When I first purchased it, I remember reading it might not last with kalkwasser. Well, 5 years and 1000s of gallons later, the unit is still functioning perfectly. When it dies someday, I will not think twice about purchasing any other brand. Don't think twice, this is the best top of on the market!

Mixed feelingsBy Wolfentankon 5/16/2015

Wolfentank wouldn't recommend this product to a friend

I've been using one of these for about 8 months or so, and I can't say that I love it or hate it. It's possible that my unit may have a defect as it will occasionally over fill and trigger the emergency alarm. At the same time I had a cheap $10 float switch/dosing pump set up on a nano tank that was flawless. Overall, this is a pretty good ATO and I do like the alarms. I wish it had some kind of switch to turn it off/on for when I'm doing water changes though.

Worth every dime!By Gerryon 5/14/2015

Gerry would recommend this product to a friend

The $200 dollar price tag is a little hard to swallow... But the peace of mind is completely worth it. Even though the instructions were a little hard to decipher because their English was badly translated(at least for me it was) the set up was simple and quick.
I did have a defect with the laser eye but BRS was super quick on getting squared away.

Wish everything was this easy.By jonon 4/27/2015

jon would recommend this product to a friend

drop it in tank. connect a few wires. fill container. set optical level. done...
only issue i had i had to call to figure out where the sensor picked up its not the tip its the beginning of the cone. has multiple sensor options and fail safes. highly recommend.

would recommend this product to a friend and reeferBy Frankon 4/27/2015

Frank would recommend this product to a friend

This is my 2nd one have two tanks 90 gallon and 180 gallon on my 180 Gallon have been running the 1st one for over two years now and have not one issue the best thing out there, I have used, different ATO but this is the one everyone should go with. ALL REEFERS THIS MUST HAVE save you lot of time. Just set it up keep water in the pump unit that you used and walk away.

Perfect..!!By Dinoflagellateson 4/23/2015

Dinoflagellates would recommend this product to a friend

I should bought this ATO a year ago an forget the daily top of. This set is all I needed for my 150 gal reef aquarium..!

Worth the priceBy Andrewon 4/19/2015

Andrew would recommend this product to a friend

I got this ATO unit to replace an old JBJ unit I had on my 55 gallon. What a step up in quality. I really like the 2 sensors; the laser sensor to measure and monitor water level for the ATO and the float level for backup to prevent overfilling. Works like a champ! This unit has its own water pump which is a big plus. Made by Tunze in Germany. Build quality and engineering of a BMW.

Would recommend this product to a friendBy Jameson 4/12/2015

James would recommend this product to a friend

I liked this ATO so well I bought a second one for a tank I have set up in another part of the house. Its simple to use and maintain. The instructions are almost too detailed, in my opinion, I had to read them several times but they are effective. I like the two different means of shut off, the electronic sensor and the float valve. BRS TV should consider a video installing one of these and setting up the electronic eye, to support the complicated instructions. Great product IME.

Best atoBy Mikeon 3/29/2015

Mike would recommend this product to a friend

I pick this unit up two years ago on Black Friday and it's been running like a champ since. as the BRS YouTube video indicates the laser as well as the mechanical part of this provides a great backup is fairly easy to put together which sometimes is in the case with Tunze Products but this is been doing the job for two years.

Works perfectlyBy Chrison 3/27/2015

Chris would recommend this product to a friend

I love this thing. It works perfectly and has never failed. Not much else to say than that.

eliminated manual topoffBy Gregon 3/23/2015

Greg would recommend this product to a friend

I like it So far no issues. The reviews were good. Instead or trying something I am usually using others experiences to save me the anguish of poor decisions